45 lines
1.4 KiB
TypeScript
45 lines
1.4 KiB
TypeScript
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// Copyright: Ankitects Pty Ltd and contributors
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// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
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/* eslint
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@typescript-eslint/no-non-null-assertion: "off",
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*/
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function wrappedExceptForWhitespace(text: string, front: string, back: string): string {
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const match = text.match(/^(\s*)([^]*?)(\s*)$/)!;
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return match[1] + front + match[2] + back + match[3];
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}
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function moveCursorPastPostfix(selection: Selection, postfix: string): void {
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const range = selection.getRangeAt(0);
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range.setStart(range.startContainer, range.startOffset - postfix.length);
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range.collapse(true);
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selection.removeAllRanges();
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selection.addRange(range);
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}
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export function wrapInternal(
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root: Document | ShadowRoot,
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front: string,
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back: string,
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plainText: boolean
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): void {
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const selection = root.getSelection()!;
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const range = selection.getRangeAt(0);
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const content = range.cloneContents();
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const span = document.createElement("span");
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span.appendChild(content);
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if (plainText) {
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const new_ = wrappedExceptForWhitespace(span.innerText, front, back);
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document.execCommand("inserttext", false, new_);
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} else {
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const new_ = wrappedExceptForWhitespace(span.innerHTML, front, back);
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document.execCommand("inserthtml", false, new_);
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}
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if (!span.innerHTML) {
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moveCursorPastPostfix(selection, back);
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}
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}
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